Actually, whitening mask packaging refers to the phenomenon of ink film to bleach, the phenomenon and can be divided into solvent bleaching phenomenon of the two kinds of bleaching and resin.
Mask packaging factory is introduced, its bleaching mainly has two kinds: 1.
This albino phenomenon found in alcohol sex ink, when humidity is high, due to the latent heat of evaporation of the solvent, near ink film can be cool, make water infiltrated, cause the printing MoBai.
When using the high latent heat of evaporation of the solvent, of course, more prone to the phenomenon.
Balance when printing ink solvents in bad, true solvent volatilization, first and dilute the residual in printing ink, can make the ink, resin precipitation precipitation in bleaching.